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Proceedings Paper

Fabrication and optical characterisation of InGaN/GaN nanorods
Author(s): Xi Dai; Xiaoming Wen; Michael Latzel; Martin Heilmann; Christian Appelt; Yu Feng; Jianfeng Yang; Weijian Chen; Shujuan Huang; Santosh Shrestha; Silke Christiansen; Gavin Conibeer
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Paper Abstract

We report the fabrication of densely packed InGaN/GaN nanorods with high hexagonal periodicity. Nanosphere lithography and reactive ion etching were adopted to fabricate the nanorods from planar multiple quantum wells (MQWs). Compared to the planar MQWs, the nanorods exhibit significant luminescence enhancement. This is mostly attributed to the increased radiative recombination and light extraction efficiency. Both photoluminescence and Raman measurements confirmed in-plane strain relaxation in the MQWs after nanofabrication. A reduction in strain-induced quantum confined Stark effect in the nanorods increased radiative recombination. This work is most crucial to the understanding of optical properties with respect to the carrier transport and recombination in InGaN/GaN nanorods.

Paper Details

Date Published: 22 December 2015
PDF: 9 pages
Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 96680F (22 December 2015); doi: 10.1117/12.2202420
Show Author Affiliations
Xi Dai, The Univ. of New South Wales (Australia)
Max-Planck-Institut für die Physik des Lichts (Germany)
Xiaoming Wen, The Univ. of New South Wales (Australia)
Michael Latzel, Max-Planck-Institut für die Physik des Lichts (Germany)
Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Martin Heilmann, Max-Planck-Institut für die Physik des Lichts (Germany)
Christian Appelt, Max-Planck-Institut für die Physik des Lichts (Germany)
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Germany)
Yu Feng, The Univ. of New South Wales (Australia)
Jianfeng Yang, The Univ. of New South Wales (Australia)
Weijian Chen, The Univ. of New South Wales (Australia)
Shujuan Huang, The Univ. of New South Wales (Australia)
Santosh Shrestha, The Univ. of New South Wales (Australia)
Silke Christiansen, Max-Planck-Institut für die Physik des Lichts (Germany)
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Germany)
Freie Univ. Berlin (Germany)
Gavin Conibeer, The Univ. of New South Wales (Australia)


Published in SPIE Proceedings Vol. 9668:
Micro+Nano Materials, Devices, and Systems
Benjamin J. Eggleton; Stefano Palomba, Editor(s)

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